The woody vegetation in 317 plots totaling 3.17 hectares was sampled in the forest of the Calakmul Biosphere Reserve, Campeche, Mexico. All stems greater than 2.5 cm diameter at breast height were measured; diameter and vernacular name (Maya or...

Between 1960 and 2000, Detroit experienced a 43% population drop. Of Detroit’s 138 square miles, 20 are reported to be vacant. Yet the city is more populous and more dense than Memphis, Denver, Portland, or Atlanta. How can Detroit’s abundant...

B/W photo, November 6, 1931. Ruins of Frisby house on the banks of the Tensas River in Tensas Parish, Louisiana. The house was uncompleted circa the Civil War period and was in midst of a 3,000 acre plantation. Soon thereafter the plantation was...